/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/GroupTopology.h
Helper function for use with ShouldAddExtraCornerAtVert. Checks that the dot product of the two mesh edge unit vectors starting from shared vertex is greater than or equal to the given threshold. Assumes that SharedVid actually is shared by the two edges, and returns false if either edge is degenerate.
static bool IsEdgeAngleSharp ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * Mesh, int32 SharedVid, const [FIndex2i](API\Runtime\GeometryCore\FIndex2i) & AttachedGroupEdgeEids, double DotThreshold )